Revista de Odontologia da UNESP
http://revodontolunesp.com.br/article/doi/10.1590/1807-2577.10517
Revista de Odontologia da UNESP
Original Article

Evaluation of the bone anatomy of the anterior region of the mandible using cone beam computed tomography

Avaliação da anatomia da região anterior da mandíbula por meio de tomografia de feixe cônico

Bruna Jussara Constantino LOCKS; Marcela CLAUDINO; Luciana Reis AZEVEDO-ALANIS; Alessandra Soares DITZEL; Flávia Noemy Gasparini Kiatake FONTÃO

Abstract

Abstract: Background: Hemorrhages, mouth floor edema and tongue elevation are complications related to surgical procedures in the anterior region of the mandible.

Objective: The objectives of this study were to evaluate the presence and location of the lingual foramen in the anterior region of the mandible and to evaluate mandibular morphology using cone beam computerized tomography (CBCT).

Material and method: The mandible’s morphology and the location, diameter and height of the lingual foramina were analyzed using the midline and the mental foramen as references, in 278 CBCT.

Result: 88% of the sample had a midline lingual foramen, totaling 408 foramina, with a mean diameter of 0.93 mm. Foramina in the lingual region between the midline and mental foramina were detected in 75% of the sample, with a mean diameter of 0.807 mm. There was no positive correlation between the presence of lingual foramina in the lateral or in the midline regions (r = -0.149; p = 0.013). In the midline region, the type I mandibular shape was predominant (96%), and type III was predominant in the lateral regions.

Conclusion: Considering the prevalence of these structures and their clinical relevance in potential surgical complications, it is important to carefully analyze the anterior region of the mandible during surgical planning.

Keywords

Cone-beam computed tomography, anatomy, mouth floor, mandible

Resumo

Resumo: Introdução: Hemorragias, edema no assoalho bucal e elevação da língua são complicações relacionadas a procedimentos cirúrgicos na região anterior da mandíbula.

Objetivo: Os objetivos deste estudo foram avaliar a presença e localização do forame lingual na região anterior da mandíbula e avaliar a morfologia mandibular utilizando tomografia computadorizada com feixe de cone (CBCT).

Material e método: A morfologia da mandíbula e a localização, diâmetro e altura do forame lingual foram analisados utilizando a medula e o forame mental como referências em 278 CBCT.

Resultado: 88% da amostra tinha um forame lingual da linha média, totalizando 408 forames, com um diâmetro médio de 0,93 mm. Na região lingual entre a linha média e forames mentais foram detectados em 75% da amostra, com um diâmetro médio de 0,807 mm. Não houve correlação positiva entre a presença de forames lingual nas regiões lateral ou na região média (r = -0,149; p = 0,013). Na região da linha média, a forma mandibular do tipo I era predominante (96%) e o tipo III predominava nas regiões laterais.

Conclusão: Considerando a prevalência dessas estruturas e sua relevância clínica em possíveis complicações cirúrgicas, é importante analisar cuidadosamente a região anterior da mandíbula durante o planejamento cirúrgico.
 

Palavras-chave

Tomografia computadorizada de feixe cônico, anatomia, assoalho bucal, mandíbula

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